List of associations between Contacts and Ressources


I have created a custom package to manage my classes.
In that package, I have a custom “Class” module, and a custom “Ressource” module.

The association I need to create is for the “Class” Module where I need to be able to pick a “Contact” from a list and associate it to a “Ressource”.
To complicate, a “Class” shall hold up to 8 of those associations.

Any clue on how I can manage this?